... particle could reach 19mm BK series stainless steel centrifugal pumps with semi-open impeller, max. solid 19mm, produced by ... impeller and shaft are made of SUS304 or SUS316, with features of exchangeable components, stable quality, small size, light ... aluminum alloy motor case, single phase with thermal protector, Class F or B, Protection IP54, Continuous duty.Operation Condition:Liquid Temperature: ...